Here's a helpful guide to understanding What is the difference between leather stain and leather dye?, so you can make the best decision for your needs.
Grey Aniline Woodrow 33 Box Leather Ottoman
The Difference Between Leather Dye, Paint and Stain – Leather Hero
This water-based stain is amazing! You won't believe the rich colors and how easy it is to apply with uniform results. It's a blend of natural and synthetic waxes, dye-stuffs and binders with high penetration and dyeing power. This stain will not bleed or rub off. Colors can be mixed to form different hues. It can also be thinned with water to reduce intensity. Use the Eco-Flo Gloss Top Finish for a final coat. Do not use on suede; for veg-tan leather use only.
Tandy Leather Eco-Flo Waterstain Dark Brown 8.5 oz. (250ml) 2800-02
Stain or Finish? - Paul Sellers' Blog
Super Value 12OZ Leather Recoloring Kit: Our 12oz leather recoloring balm is an upgraded style, with a larger volume and more cost-effective. Paired
BSCPAM Leather Recoloring Balm - Leather Repair Kit for Furniture & Vinyl- Leather Dye, Restore & Renew for Couches, Car Seats, Belt, Boots - Non
Special formula reduces Fiebing's Leather Dye or Professional Oil Dye to lighter tints or consistencies. Great for cleaning brushes after brush dyeing.
Fiebing's Leather Dye Reducer
The Difference Between Leather Dye, Paint and Stain – Leather Hero
Leather Stain Vs Dye: What's The Difference? - Independence Brothers
What is dye transfer on leather and how to remove it
Grades Of Leather - A Comprehensive Guide To Leather Qualities
I've dyes these pieces 3 times so far, and each time they come out
How To Dye Leather: Dummies Guide To Dye Leather
What is Leather Dye?
Tandy Leather Eco-Flo Leather Dye 4.4 fl. oz. 132 ml Bison Brown 2600-03